The Doctor: The Reason for My Salvation Is the Basis of My Assurance

We must not only think of it [salvation] in terms of ourselves, but we must realize that God’s ultimate object in ever planning and introducing the scheme of salvation is to glorify His Son. … We must realize – there is nothing so comforting as this, nothing so assuring – that the very honor and glory of the blessed Holy Trinity is involved in our ultimate complete salvation.  – D. Martyn Lloyd-Jones, Romans vol. 8, p. 229